Metro Wastewater Treatment Plant
Columbia, SC · Richland County · Publicly Owned Treatment Works
- Average flow
- 29.87 MGD
- Design flow
- 60 MGD
- NPDES permit
- SC0020940
- Administratively continued
- Permit expires
- May 2023
- Population served
- 314,797
- CWNS 2022
Metro Wastewater Treatment Plant is a publicly owned wastewater treatment works in Columbia, Richland County, South Carolina treating an average of 29.87 million gallons per day against a permitted design capacity of 60 MGD, serving about 314,797 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos. It discharges under NPDES permit SC0020940 (administratively continued), which expires in May 2023, with 7 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
9 verified contacts for Metro Wastewater Treatment Plant, with validated emails and direct phone numbers.
Unlock 9 verified contacts (6 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Metro Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in South Carolina
Columbia · 2 mi away
8.28 MGD
Chapin · 23 mi away
0.97 MGD
Eastover · 23 mi away
0.38 MGD
Ridgeway · 25 mi away
0.06 MGD
Wagener · 29 mi away
—
Lugoff · 29 mi away
0.65 MGD
Camden · 30 mi away
1.67 MGD
Batesburg · 31 mi away
0.87 MGD
Metro Wastewater Treatment Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated March 4, 2025.